Web Services Testing

Web Services Testing

Managing all of your webs services can be very complex.  QualiTest simplifies the work with a unique approach to web services testing will save you time, money and the tedium of manual regression testing. We address the overall architecture and interaction of services, while using the best testing tools and testing approaches to focus on functional, inter-operational, performance and security testing.

What is Web Service Testing?

Web services is a common digital way to implement IT-based solutions for business tasks, where many interconnected systems are laser-focused on assembling these tasks to do everything you need.

They help you achieve your business web-friendly needs one step at a time, like opening a new account, fetching an inventory price or changing someone’s account data.

They help online businesses drive their success, by letting computers do what computers do best – boring straight- forward data-specific critical work.

Knowing that your web services work as expected is essential, and that’s where the need to test comes in.

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Web services are how multiple machines interact across a network, regardless of platform or computer language used on either side. A web service implies a behind-the-scenes computer-driven action or group of actions, intelligently contained in a component, which in turn is part of a business process or flow. That larger entity might be a web store or inventory manager or a booking system. This whole structure is part of an architecture known as SOA, where web services are the smallest components. Understanding that structure is essential to designing a test strategy.

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What is Web Service Testing with SOAP?

A way to access

web services (REST is another way) using XML messages that include a WSDL catalog-style listing of web services, complete with their name(s), and input and output field parameter details, which serve as an ideal testing roadmap.

Well-suited

for performing transactions that require multiple calls, and need
to enforce a strict client-server contract (like telecom services or anything financial) and works well with distributed enterprise environments.

Highly structured

with error-handling and added security (WS-Security, WS-ReliableMessaging , WS-SecureConversation, etc.) built-in, is designed for expansion, and can use
transport protocols besides HTTP. But structure does not guarantee that the variable content works as expected.

Potential Risks You Need to Avoid, for SOAP and REST

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As you can imagine, there is a high level of concern for both functional and non-functional testing validation for these web services, from what can go wrong in the request and response messages to how well the web services interact, since they were developed independently. A web API may be called by multiple different API’s; how do you know if all of these messages are built properly? Potential problems include bad connectivity, frustrated users, lost money, and sensitive data getting compromised. All of the need-to-know questions listed above are still relevant – anything less could put you or your customers at risk. Imagine the damage caused if a bug blocks communications, locks out sales to a customer segment, sells an item for an unintended discount, or loses transaction records.

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Is the syntax of the request and response messages correct?

Is performance as expected, or are there delays requiring improvement (especially during heavy usage)?

Is concurrency (simultaneous access to the same record) handled as expected?

Is the security of the message hand- led as expected (is sensitive data encoded)?

Is the functionality as expected (from a variety of scenarios that cover your edge cases):

Is the syntax of the request and response messages correct?

Is the functionality as expected (from a variety of scenarios that cover your edge cases):

Is concurrency (simultaneous access to the same record) handled as expected?

Is the security of the message hand- led as expected (is sensitive data encoded)?

Is performance as expected, or are there delays requiring improvement (especially during heavy usage)?

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Does the response data match the details of your request message?
What happens with valid and invalid boundary values? What about very invalid values?
Did an error happen, and if yes, how is it handled?
Are all CRUD data changes to each server done as expected?

If you don’t know how well your system works, then you need to find out before your users do.

The QualiTest Solution

Our web service expertise and commitment to finding you the best way to validate and verify your IT work has made us a powerful force in the testing community. Your business has specific concerns issues that require a solution tailored to your business beyond the basic functional and non-functional needs of your system. Our competencies are fine-tuned to accomplish our work quickly with better coverage, including auto-generation through accelerators, web service mocking and multiple environments for risk mitigation.

Efficiency through Automatic Generation of Test Scripts and Test Data

Automating test script and test data generation for use during later iterations can save lots of time. That’s why QualiTest developed unique accelerators for parsing the WSDL, mapping all of the mandatory and optional fields, then loading a repository with test cases and valid and invalid test data based on those fields. Additional business logic test cases can be added to the automation suite by simply filling in the data required for each request. This allows us to increase coverage while decreasing execution time and staffing, leading to guaranteed success and end-user satisfaction. This aggressive regression testing approach tackles the Potential Risks list above, and can also be applied to new web services.

Service Simulator Setup for Web Services Mocking

Why wait for a web service or web API to be built before testing can begin? We can create a Service Simulator that returns the expected downstream responses by mocking without having to go through the entire stack of services that may be set up in an enterprise service bus environment (ESB). The simulator is comprised of mock services that simulate real responses. Once the web service is built, we rerun the automated tests we built for the mocked services, saving ramp up time.

Multiple Environments for Risk Mitigation

Some Web Service testing risks comes from component versions that don’t match up, and therefore cannot be successfully tested together or at the same time. For that reason, QualiTest’s approach employs multiple environments, enabling compatible-version web service testing.